Cryptanalysis and enhancements of delegation-based authentication protocol for secure roaming service
by Yichen Wang; Qiong Pu; Shuhua Wu
International Journal of Electronic Security and Digital Forensics (IJESDF), Vol. 4, No. 4, 2012

Abstract: Most recently, Youn and Lim proposed an improved delegation-based authentication protocol for secure roaming service with unlinkability. In this letter, we show that: 1) it is vulnerable to a denial of service (DoS) attack; 2) cannot provide the unlinkability as claimed. Finally, we propose an enhanced protocol to remedy the security loopholes existing in it. Moreover, our improved protocol is still efficient.

Online publication date: Wed, 19-Nov-2014

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